In operando study of the hydrogen-induced switching of magnetic anisotropy at the Co/Pd Interface for magnetic hydrogen gas sensing

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dc.contributor.authorCauser, GLen_AU
dc.contributor.authorKostylev, Men_AU
dc.contributor.authorCortie, DLen_AU
dc.contributor.authorLueng, Cen_AU
dc.contributor.authorCallori, SJen_AU
dc.contributor.authorWang, XLen_AU
dc.contributor.authorKlose, Fen_AU
dc.date.accessioned2025-06-27T04:11:49Zen_AU
dc.date.available2025-06-27T04:11:49Zen_AU
dc.date.issued2019-08-02en_AU
dc.date.statistics2024-06-27en_AU
dc.description.abstractHeterostructures exhibiting perpendicular magnetic anisotropy (PMA) have traditionally served the magnetic recording industry. However, an opportunity exists to expand the applications of PMA heterostructures into the realm of hydrogen sensing using ferromagnetic resonance (FMR) by exploiting the hydrogen-induced modifications to PMA that occur at the interface between Pd and a ferromagnet. Here, we present the first in operando depth-resolved study of the in-plane interfacial magnetization of a Co/Pd film which features tailorable PMA in the presence of hydrogen gas. We combine polarized neutron reflectometry with in situ FMR to explore how the absorption of hydrogen at the Co/Pd interface affects the heterostructures spin-resonance condition during hydrogen cycling. Experimental data and modeling reveal that the Pd layer expands when exposed to hydrogen gas, while the in-plane magnetic moment of the Co/Pd film increases as the interfacial PMA is reduced to affect the FMR frequency. This work highlights a potential route for magnetic hydrogen gas sensing. © 2019 American Chemical Society.en_AU
dc.description.sponsorshipThe authors thank H. Zhu for assisting with the TEM measurements. Research was supported by the Australian Government through the Australian Nuclear Science and Technology Organisation (under proposals 5062, 5247, 5808, and 6223), the University of Western Australia through the Research Collaboration Award, the National Computational Infrastructure through the Raijin high-performance computing system at the Australian National University (partner share with the University of Wollongong), and the Australian National Fabrication Facility at the Centre for Microscopy, Characterization and Analysis, University of Western Australia, a facility funded by the University, State and Commonwealth Governments. G.L.C. acknowledges support from the Australian Government Research Training Program Award (award No. 3421092) and the Australian Institute of Nuclear Science and Engineering Postgraduate Research Award (award No. ALNSTU12030).en_AU
dc.format.mediumPrint-Electronicen_AU
dc.identifier.citationCauser, G. L., Kostylev, M., Cortie, D. L., Lueng, C., Callori, S. J., Wang, X. L., & Klose, F. (2019). In operando study of the hydrogen-induced switching of magnetic anisotropy at the Co/Pd interface for magnetic hydrogen gas sensing. ACS Applied Materials & Interfaces, 11(38), 35420-35428. doi:10.1021/acsami.9b10535en_AU
dc.identifier.issn1944-8244en_AU
dc.identifier.issn1944-8252en_AU
dc.identifier.issue38en_AU
dc.identifier.journaltitleACS Applied Materials & Interfacesen_AU
dc.identifier.pagination35420-35428en_AU
dc.identifier.urihttps://doi.org/10.1021/acsami.9b10535en_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16207en_AU
dc.identifier.volume11en_AU
dc.languageEnglishen_AU
dc.language.isoenen_AU
dc.publisherAmerican Chemical Societyen_AU
dc.subjectHydrogenen_AU
dc.subjectAnisotropyen_AU
dc.subjectGasesen_AU
dc.subjectMagnetismen_AU
dc.subjectFerromagnetismen_AU
dc.subjectNeutron reflectorsen_AU
dc.subjectSpinen_AU
dc.subjectProtactiniumen_AU
dc.subjectFilmsen_AU
dc.subjectPalladiumen_AU
dc.subjectFerromagnetic resonanceen_AU
dc.subjectRenewable energy sourcesen_AU
dc.titleIn operando study of the hydrogen-induced switching of magnetic anisotropy at the Co/Pd Interface for magnetic hydrogen gas sensingen_AU
dc.typeJournal Articleen_AU
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